NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,370 terms related to cancer and medicine.
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- listen (MA-kroh-KAL-sih-fih-KAY-shun)
- A small deposit of calcium in the breast that cannot be felt but can be seen on a mammogram. It is usually caused by aging, an old injury, or inflamed tissue and is usually not related to cancer.